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We introduce the study of search games between a mobile Searcher and an immobile Hider in a new setting in which the Searcher has some potentially erroneous information, i.e., a prediction on the Hider's position. The objective is to…

计算机科学与博弈论 · 计算机科学 2024-09-05 Spyros Angelopoulos , Thomas Lidbetter , Konstantinos Panagiotou

We introduce and study the general setting of weighted search in which a number of targets, each with a certain weight, are hidden in a star-like environment that consists of $m$ infinite, concurrent rays, with a common origin. A mobile…

数据结构与算法 · 计算机科学 2021-05-05 Spyros Angelopoulos , Konstantinos Panagiotou

We study the setting in which a mobile agent must locate a hidden target in a bounded or unbounded environment, with no information about the hider's position. In particular, we consider online search, in which the performance of the search…

数据结构与算法 · 计算机科学 2020-12-01 Spyros Angelopoulos , Malachi Voss

We study the classic problem in which a Searcher must locate a hidden point, also called the Hider in a network, starting from a root point. The network may be either bounded or unbounded, thus generalizing well-known settings such as…

最优化与控制 · 数学 2019-08-07 Spyros Angelopoulos , Thomas Lidbetter

We revisit the problem of searching for a target at an unknown location on a line when given upper and lower bounds on the distance D that separates the initial position of the searcher from the target. Prior to this work, only asymptotic…

数据结构与算法 · 计算机科学 2013-10-04 Prosenjit Bose , Jean-Lou De Carufel , Stephane Durocher

We study the problem of searching for a target at some unknown location in $\mathbb{R}^d$ when additional information regarding the position of the target is available in the form of predictions. In our setting, predictions come as…

计算几何 · 计算机科学 2025-04-08 Sergio Cabello , Panos Giannopoulos

The linear search problem, informally known as the cow path problem, is one of the fundamental problems in search theory. In this problem, an immobile target is hidden at some unknown position on an unbounded line, and a mobile searcher,…

数据结构与算法 · 计算机科学 2020-09-15 Spyros Angelopoulos

We consider the problem of searching for an object on a line at an unknown distance OPT from the original position of the searcher, in the presence of a cost of d for each time the searcher changes direction. This is a generalization of the…

数据结构与算法 · 计算机科学 2007-05-23 Erik D. Demaine , Sandor P. Fekete , Shmuel Gal

We consider the problem of searching for rays (or lines) in the half-plane. The given problem turns out to be a very natural extension of the cow-path problem that is lifted into the half-plane and the problem can also directly be motivated…

计算几何 · 计算机科学 2025-12-19 Elmar Langetepe , Florian Gans

We study a generalized binary search problem on the line and general trees. On the line (e.g., a sorted array), binary search finds a target node in $O(\log n)$ queries in the worst case, where $n$ is the number of nodes. In situations with…

数据结构与算法 · 计算机科学 2024-06-19 Agustín Caracci , Christoph Dürr , José Verschae

We consider linear search for an escaping target whose speed and initial position are unknown to the searcher. A searcher (an autonomous mobile agent) is initially placed at the origin of the real line and can move with maximum speed $1$ in…

离散数学 · 计算机科学 2024-04-24 Jared Coleman , Dmitry Ivanov , Evangelos Kranakis , Danny Krizanc , Oscar Morales-Ponce

We present results on new variants of the famous linear search (or cow-path) problem that involves an agent searching for a target with unknown position on the infinite line. We consider the variant where the agent can move either at speed…

离散数学 · 计算机科学 2025-05-15 Jared Coleman , Oscar Morales-Ponce

We consider the two-sided stable matching setting in which there may be uncertainty about the agents' preferences due to limited information or communication. We consider three models of uncertainty: (1) lottery model --- in which for each…

计算机科学与博弈论 · 计算机科学 2016-07-12 Haris Aziz , Péter Biró , Serge Gaspers , Ronald de Haan , Nicholas Mattei , Baharak Rastegari

This work considers the problem of designing an attack strategy on remote state estimation under the condition of strict stealthiness and $\epsilon$-stealthiness of the attack. An attacker is assumed to be able to launch a linear attack to…

系统与控制 · 电气工程与系统科学 2020-06-09 Hanxiao Liu , Yuqing Ni , Lihua Xie , Karl Henrik Johansson

We revisit the linear search problem where a robot, initially placed at the origin on an infinite line, tries to locate a stationary target placed at an unknown position on the line. Unlike previous studies, in which the robot travels along…

数据结构与算法 · 计算机科学 2017-01-12 Jurek Czyzowicz , Evangelos Kranakis , Danny Krizanc , Lata Narayanan , Jaroslav Opatrny , Sunil Shende

In search problems, a mobile searcher seeks to locate a target that hides in some unknown position of the environment. Such problems are typically considered to be of an on-line nature, in that the input is unknown to the searcher, and the…

数据结构与算法 · 计算机科学 2018-10-19 Spyros Angelopoulos , Christoph Dürr , Shendan Jin

This paper addresses two classes of different, yet interrelated optimization problems. The first class of problems involves a robot that must locate a hidden target in an environment that consists of a set of concurrent rays. The second…

人工智能 · 计算机科学 2015-04-28 Spyros Angelopoulos

We study the two-sided stable matching problem with one-sided uncertainty for two sets of agents A and B, with equal cardinality. Initially, the preference lists of the agents in A are given but the preferences of the agents in B are…

数据结构与算法 · 计算机科学 2024-07-16 Evripidis Bampis , Konstantinos Dogeas , Thomas Erlebach , Nicole Megow , Jens Schlöter , Amitabh Trehan

Despite breakthrough performance, modern learning models are known to be highly vulnerable to small adversarial perturbations in their inputs. While a wide variety of recent \emph{adversarial training} methods have been effective at…

机器学习 · 计算机科学 2020-02-26 Adel Javanmard , Mahdi Soltanolkotabi , Hamed Hassani

In multi-agent search planning for a randomly moving and camouflaging target, we examine heterogeneous searchers that differ in terms of their endurance level, travel speed, and detection ability. This leads to a convex mixed-integer…

最优化与控制 · 数学 2023-11-03 Miguel Lejeune , Johannes O. Royset , Wenbo Ma
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